Plants › Sunflowers, Daisies, Asters, and Allies
Stemless Thistle
Cirsium acaulon
25 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
ground thistleCirsium esculentum
creeping thistleCirsium arvense
musk thistleCarduus nutans
Bull ThistleCirsium vulgare
Silver ThistleCarlina acaulis
Alpine ThistleCarduus defloratus
Marsh ThistleCirsium palustre
bristle thistleCirsium horridulum
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 3,906 |
|---|---|
| Alaska | 3,905 |
| United Kingdom | 445 |
| England | 441 |
| France | 389 |
| Germany | 366 |
| Switzerland | 275 |
| Italy | 205 |
| Sweden | 113 |
| Nord-Ovest | 106 |
Counts show where people looked, not only where it lives.
Traits
Group and habits
- Pollinator-associated plantDescends from a plant lineage commonly associated with pollinators.Inferred from its group
Classification
| Kingdom | Plants · Plantae |
|---|---|
| Phylum | Vascular Plants · Tracheophyta |
| Class | Dicots · Magnoliopsida |
| Order | Sunflowers, Bellflowers, Fanflowers, and Allies · Asterales |
| Family | Sunflowers, Daisies, Asters, and Allies · Asteraceae |
| Genus | Plume Thistles · Cirsium |
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- How much to rely on each source
Remember the name next time.
Practise Stemless Thistle with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.